Solar controls of fire events during the past 600,000 years
| Autor: | Arne Kappenberg, Eva Lehndorff, Wulf Amelung, Nadine Pickarski, Thomas Litt |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Total organic carbon
010506 paleontology Archeology Global and Planetary Change 010504 meteorology & atmospheric sciences Sediment Geology Vegetation 01 natural sciences Incomplete knowledge Paleoclimatology Environmental science Physical geography Precipitation Ecology Evolution Behavior and Systematics 0105 earth and related environmental sciences |
| Zdroj: | Quaternary Science Reviews. 208:97-104 |
| ISSN: | 0277-3791 |
| Popis: | Fires have accompanied terrestrial life from the beginning, yet with incomplete knowledge about feedback to paleoclimate and vegetation. Here, we have assessed how climate triggered the activity of vegetation fires in a 600,000 years continental record. We recorded benzene polycarboxylic acids as markers for burned organic carbon residues (BC) in sediments of Lake Van (Turkey), one of the oldest lacustrine archives currently available on Earth. Though fire and BC peaks were assumed to occur during dry climates, BC concentration and related fire temperatures were largest during periods of warm/humid climatic conditions. During humid periods, we recorded up to 45 mg BC per cm 3 sediment (precipitation ∼ 800 mm/a), while BC amounts during dry climates were smaller by a factor of 10 ( 3 sediment, precipitation |
| Databáze: | OpenAIRE |
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